Master Chief and Cortana are fighting the daleks. It is the year 2562. They are Earth near UNSC HQ.
Master Chief: We're driving them back!
*Master chief advances. He shoots a dalek. It goes up in flames.*
Cortana: Two unknown attack craft and on Phantom class Covenant gunship incoming!
*A missile hits where Master chief is standing.*
Master Chief: Hold your positions.
*The infinity comes onto the Battlefield*
Thomas Lasky: UNSC Infinity on station, ready to provide support as needed.
*The infinity blasts the Daleks into pieces*
Cortana: This doesn't make sense. Why would the Daleks be working with the covenant? It's almost like they knew would lose
*Spartans shoot the remaining daleks. The daleks try to resist but the Spartans push through. The covenant run away in large hordes. *
The Doctor and Rose are in the Tardis
Doctor: Fancy a trip to the future? Say, 2562?
Rose: That sounds lovely doctor, where to?
Doctor: The planet Reach. It's a beautiful planet with so much history and…
*Rose laughs* Rose: I get it doctor, it's nice there.
*The Doctor starts up the T.A.R.D.I.S. The T.A.R.D.I.S whooshes to the future*
*They start falling into re-entry.*
Master Chief and Cortana are reviewing the Battle at UNSC HQ.
Cortana: Why are the Daleks heres? Wait…
*Cortana searches the archives.*
Cortana: It says here that the Daleks had tried to invade the earth for many years at different points in time.
Chief: Tell me more about the Daleks.
Cortana: They were created by a mad scientist called Davros, they were made from each cell in his body. They share one goal which is the utter destruction of all life in the universe-
Chief: Stop! That's all I needed to hear.
*There is a huge explosion outside. Master Chief leaves to investigate the explosion*